WORKHORSE CUSTOM CHASSIS
Service Manual
2007 W Series
SECTION
7.2
PAGE
92
Automatic Transmission – Allison
2007 W Series Chassis
© 2006 Workhorse Custom Chassis — All Rights Reserved
WSM082106
ELECTRONIC CONTROLLED SHIFTER (ECS)
SYSTEM
Shifter Overview
The Arens Controls’ Electronic Controlled Shifter (ECS)
System is a state of the art control developed for use
with Allison 1000/2000/2400 Series Transmissions. This
shift selector has been designed to provide for easier
driver operation, and features:
• Push-button operation
• Integrated safety features
• Diagnostic capabilities
• Solid state construction for reliable, extended life
operation
The system consist of two major components:
1. Push Button Shift Selector – A compact, solid-state
shift selector available for PARK and NON-PARK
transmission applications. The shift selector is
mounted in a convenient location near the vehicle
operator. The shift selector is a self-contained
electronic control that contains the push button
system, Interface Control Module, and Actuator
Control Module. The push button pad provides
quick, easy operation of the system functions. The
Interface Module communicates electronically with
Allison TCM and Park-Neutral-Position (PNP) switch.
The Actuator Control communicates with the Arens
12VDC actuator and the integrated Position Sensor.
2. The ECS actuator is a 12VDC powered shift actuator
mounted on the Allison transmission. The actuator
shifts the transmission as directed by commands
from the shift selector and within the operating
guidelines of the Allison transmission. The Arens
ECS system works in conjunction with the Allison
“adaptive shifting” electronic control system to
provide optimized shift quality. The ECS system
components also have a unique redundant electronic
system, which prevents single point electrical
failures in the system and ensures long life, trouble
free operation of the ECS system and the Allison
transmission.
